ANP Series RO membrane is a semi-permeable barrier that effectively removes contaminants, dissolved solids, microorganisms, and other impurities from water. It achieves this by utilizing pressure to force water molecules through its microscopic pores while blocking larger molecules and particles. RO membranes are rated based on their capacity to produce purified water, usually measured in gallons per day (GPD) or liters per hour (LPH). The capacity depends on factors such as membrane size, pressure, and water temperature.